That problem is hard, but because of cultural norms not as hard as it seems at first sight.
You rarely will find that baby without a stroller next to it, and without a human close by hurrying towards it.
So, if you avoid hitting that stroller and that human, and, next, avoid almost hitting that human, you probably are safe. A jury wouldn't easily convict you for accidentally hitting a baby that fell out of a stroller on the middle of the road and then was left alone without any adult supervision.
I would think the difference between a solid object such and a piece of concrete or steel girder and various low-density objects (plastic bags, empty carton boxes) is harder.
On the other hand, I guess it might be easier than laymen would think to use machine learning to build a "what's the density of the object on this photo" program that is in par with humans.
You rarely will find that baby without a stroller next to it, and without a human close by hurrying towards it.
So, if you avoid hitting that stroller and that human, and, next, avoid almost hitting that human, you probably are safe. A jury wouldn't easily convict you for accidentally hitting a baby that fell out of a stroller on the middle of the road and then was left alone without any adult supervision.
I would think the difference between a solid object such and a piece of concrete or steel girder and various low-density objects (plastic bags, empty carton boxes) is harder.
On the other hand, I guess it might be easier than laymen would think to use machine learning to build a "what's the density of the object on this photo" program that is in par with humans.